FT. LAUDERDALE (CBSMiami/AP) – A woman from New Mexico who died in a Thanksgiving Day boating accident off the Hillsboro Inlet in Pompano Beach drowned, according to the county’s Medical Examiner’s Office.

Nina Poppelsdorf, 54, was in Florida for a holiday dive trip with her nephew, according to the Broward Sheriff’s Office.

Poppelsdorf, who was a manager at one of the nation’s leading research laboratories,was part of a group of about two dozen coming back from a dive outing Thursday when a large wave flipped over the 45-foot catamaran The Coral Princess. Witnesses said the boat was approaching the inlet when a wave 8 to 10 feet high came in and flipped the twin-hulled craft upside down.

Poppelsdorf was in Florida with her nephew, who is from Pennsylvania, just for the dive trip.

“They just went on this fun trip together to just do dives,” said sheriff’s office spokeswoman Dani Moscehlla. “So this is especially tragic that it was on Thanksgiving and it ended in tragedy.”

Poppelsdorf was a senior manager of the radiation protection, industrial hygiene and safety center at Sandia National Laboratories, lab spokeswoman Heather Clark said. She was hired in Aug. 1992 at the lab, a federal research and development center.

“Nina worked for about 20 years at Sandia National Laboratories and made many contributions to industrial hygiene, safety and radiation protection,” said Sandia Environment, Safety & Health director Sid Gutierrez, her supervisor. “She served as both a staff member and later as an outstanding manager. She was recently promoted to senior manager and was well-respected by her peers and staff alike. Her contributions to improving safety at Sandia are numerous and she will be missed as both a member of the Sandia family and as a wonderful person.”

Darrell Fong, a Sandia Labs safety engineering manager who worked with Poppelsdorf, said she was admired for her professionalism and easily identified by her laugh.

Poppelsdorf was a leader of a Sandia team that helped in the response to the crisis at Japan’s Fukushima nuclear plant after the March 2011 earthquake and tsunami left several reactors there without cooling water, Fong said. He also said Poppelsdorf was a certified diving instructor.

The Coral Princess is a Corinthian catamaran owned by South Florida Diving Headquarters in Pompano Beach. The owner released this statement Friday afternoon:

Following yesterday’s tragic accident, we are over whelmed by the community support for our passengers, crew and operation. Our thoughts and prayers go to all those affected by this tragedy. Our primary concern is for those who were on the boat. We suspended all trips today to search for any belongings we could recover and assist our passengers in any way we could. Additionally we are working with the U.S. Coast Guard Investigators to understand the cause and origin of the wave that caused the capsize. Out of respect for the passengers and any family members affected we are going to wait until the investigation is complete before making further comments. We also would like to thank BSO, USCG, FWC, Pompano Fire & Rescue, Pompano Beach Rescue, Ft. Lauderdale Sea Tow, Sundance Marine and volunteers for a heroic coordinated effort to save lives and property.

Three of the 23 people on the boat were treated and released. Most of them were from out-of-town on vacation, authorities said

Officials said nearby boaters jumped into the water to pull people to safety. Pompano Beach Fire Rescue workers used personal watercraft to get to the site. The U.S. Coast Guard and other state and local agencies assisted in the rescue.